Lithium-ion conduction in complex hydrides LiAlH4 and Li 3 AlH6

H. Oguchi; M. Matsuo; T. Sato; H. Takamura; H. Maekawa; H. Kuwano; S. Orimo

doi:10.1063/1.3356981

Lithium-ion conduction in complex hydrides LiAlH₄ and Li ₃ AlH₆

H. Oguchi, M. Matsuo, T. Sato, H. Takamura, H. Maekawa, H. Kuwano, S. Orimo

Research output: Contribution to journal › Article › peer-review

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Abstract

Lithium-ion conduction in complex hydrides LiAlH₄ and Li ₃ AlH₆ was investigated using ac complex impedance measurements. The conductivities at room temperature were 8.7× 10-9 S/cm in the case of LiAlH₄ and 1.4× 10-7 S/cm in the case of Li ₃ AlH₆. To enhance the conductivity of Li₃ AlH₆ having good thermal stability in heating/cooling cycles, mechanical milling, and addition of lithium halides (LiCl, LiI) were implemented. The maximum value of 2.5× 10-4 S/cm at 393 K was observed when 0.33 M ratio of LiI was added to Li₃ AlH₆. This study demonstrated two research directions to enhance the lithium-ion conductivity in a variety of complex hydrides.

Original language	English
Article number	096104
Journal	Journal of Applied Physics
Volume	107
Issue number	9
DOIs	https://doi.org/10.1063/1.3356981
Publication status	Published - 2010 May 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Lithium-ion conduction in complex hydrides LiAlH4 and Li 3 AlH6",

abstract = "Lithium-ion conduction in complex hydrides LiAlH4 and Li 3 AlH6 was investigated using ac complex impedance measurements. The conductivities at room temperature were 8.7× 10-9 S/cm in the case of LiAlH4 and 1.4× 10-7 S/cm in the case of Li 3 AlH6. To enhance the conductivity of Li3 AlH6 having good thermal stability in heating/cooling cycles, mechanical milling, and addition of lithium halides (LiCl, LiI) were implemented. The maximum value of 2.5× 10-4 S/cm at 393 K was observed when 0.33 M ratio of LiI was added to Li3 AlH6. This study demonstrated two research directions to enhance the lithium-ion conductivity in a variety of complex hydrides.",

author = "H. Oguchi and M. Matsuo and T. Sato and H. Takamura and H. Maekawa and H. Kuwano and S. Orimo",

note = "Funding Information: This work was partially supported by KAKENHI, the Creative Scientific Research Program (Grant No. 18GS0203: Study of nano-energy system creation), Scientific Research (A) (Grant No. 21246100), and (S) (Grant No. 17106008), and the Global-COE Program “Materials Integration (Tohoku University).” Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

year = "2010",

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doi = "10.1063/1.3356981",

language = "English",

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AU - Oguchi, H.

AU - Matsuo, M.

AU - Sato, T.

AU - Takamura, H.

AU - Maekawa, H.

AU - Kuwano, H.

AU - Orimo, S.

N1 - Funding Information: This work was partially supported by KAKENHI, the Creative Scientific Research Program (Grant No. 18GS0203: Study of nano-energy system creation), Scientific Research (A) (Grant No. 21246100), and (S) (Grant No. 17106008), and the Global-COE Program “Materials Integration (Tohoku University).” Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2010/5/1

Y1 - 2010/5/1

N2 - Lithium-ion conduction in complex hydrides LiAlH4 and Li 3 AlH6 was investigated using ac complex impedance measurements. The conductivities at room temperature were 8.7× 10-9 S/cm in the case of LiAlH4 and 1.4× 10-7 S/cm in the case of Li 3 AlH6. To enhance the conductivity of Li3 AlH6 having good thermal stability in heating/cooling cycles, mechanical milling, and addition of lithium halides (LiCl, LiI) were implemented. The maximum value of 2.5× 10-4 S/cm at 393 K was observed when 0.33 M ratio of LiI was added to Li3 AlH6. This study demonstrated two research directions to enhance the lithium-ion conductivity in a variety of complex hydrides.

AB - Lithium-ion conduction in complex hydrides LiAlH4 and Li 3 AlH6 was investigated using ac complex impedance measurements. The conductivities at room temperature were 8.7× 10-9 S/cm in the case of LiAlH4 and 1.4× 10-7 S/cm in the case of Li 3 AlH6. To enhance the conductivity of Li3 AlH6 having good thermal stability in heating/cooling cycles, mechanical milling, and addition of lithium halides (LiCl, LiI) were implemented. The maximum value of 2.5× 10-4 S/cm at 393 K was observed when 0.33 M ratio of LiI was added to Li3 AlH6. This study demonstrated two research directions to enhance the lithium-ion conductivity in a variety of complex hydrides.

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Lithium-ion conduction in complex hydrides LiAlH₄ and Li ₃ AlH₆

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